525378219 has 4 divisors (see below), whose sum is σ = 700504296. Its totient is φ = 350252144.

The previous prime is 525378211. The next prime is 525378221. The reversal of 525378219 is 912873525.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 525378219 - 2³ = 525378211 is a prime.

It is a super-2 number, since 2×525378219² = 552044545999223922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (525378211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87563034 + ... + 87563039.

It is an arithmetic number, because the mean of its divisors is an integer number (175126074).

Almost surely, 2^525378219 is an apocalyptic number.

525378219 is a deficient number, since it is larger than the sum of its proper divisors (175126077).

525378219 is a wasteful number, since it uses less digits than its factorization.

525378219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175126076.

The product of its digits is 151200, while the sum is 42.

The square root of 525378219 is about 22921.1304040617. The cubic root of 525378219 is about 806.9080001195.

The spelling of 525378219 in words is "five hundred twenty-five million, three hundred seventy-eight thousand, two hundred nineteen".